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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09649574cb64fd6e081a49e41ec8891075f0e6f7996f445913bf1442fc0dc96e' 
  AND token = 'hijl7ZClHjSZWxwP1V42dR3vn12nnIPhKjzX2YXOFlE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00088

JSON explain

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