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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dd720a364c63b7c0355238dad1559703e26d0c6cd7447d575ce75bb4efdb8932' 
  AND token = 'watyQ8BwwWJbr8Rsq0bKuWIIt8N5x476gV8yXX5LXJA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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