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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bf05964a76b8d8ffefe8dfbfccfc9c1a48d2af9ff8c7f658c38ff0b24b266f62' 
  AND token = 'p49LZCs5dx59gnRgdFMEnTf2IS7Rto7tlw94Y2jEESU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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