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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'acadac2aa3a0352ea67f279cae863cb55239ee0bb25ab0cc4db6487dd79c42da' 
  AND token = 'dogBiMi5w4wifutoocWxXhu3XqdcpR6CYKSg2NUwaWE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}