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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f2ebab292b11ddf16543993b4cdeec9eeb1f21b5328b9cc56429e7af061aa4ef' 
  AND token = 'CpJPpXlVuybdmd01Wd630XYz9YAEsbq1IC0X7BRpttA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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