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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '460b3710d2afef42d08657910a25b2935e30ea996d06fad340da344263b28f82' 
  AND token = 'ujQsSs7m7gpx22Dv3q7Awj3i9JTrfBGlsOJDZn9vocw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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