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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06d886c9cb619250edc4bfd156d6055f130e22b61a3b0232d50d9680117936d8' 
  AND token = 'vE1RRKX0zw2BlZ8v5upvbA/sxlRaf9wbf2KAV6pMQn4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00072

JSON explain

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