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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60bf7d5c752332c482fed0a828e573fd87fa66645eb3048ff75abee57c63502c' 
  AND token = 'Um7Bg1iAYKpabR5Z4cp0y+kR3ROp2wHSbX/8O8iTjbA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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