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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b79135c321011b350c419b2df5151036fd835d47c77db6c65e4adf9db5b9d75e' 
  AND token = 'PmZY/ca7ot8+q73noGJid1Yktt1LiUezo1erC2fCids=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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