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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a691609bb5c5242dce2a504b1549c689f0e533515996fbc4e75ec82cca46415b' 
  AND token = 'VF1eRQ8Ma5P9+7aqx3FM0B/jZXbopicwiw7MIsQAIWo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00103

JSON explain

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