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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bb0d929ee8e05af2548af8c8731e6c0664f05f63e410ad6c265d42a34a8a6e2e' 
  AND token = 'cqM4PMNPQ6ociYJ87Solk2CX+Doy+dyTa3eh2HQQ8ms=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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