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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'acd94a129222b388e7ac64b442eae1f4bd25099fd6363740e64d15123dffac22' 
  AND token = 'JtyIY/sHNsplr0VcKt5N4sjLC1KiQmfRv93ppQGio+Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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