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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '70960bd60611595c54014a42a4ddfd4a72c0e7a32e9736eb66f9b5e2a2f9593e' 
  AND token = 'cnJ4WGG1D1M/bGzFQxqgRG/T/GrYWYfuqVxPpscpiQo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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