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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0eaaa4ad9acb6abe72630f3065287cd8acc0662d8919ac822836347a053b2407' 
  AND token = 'I8F+bgrjOu+Lto58CC9s+EJbw6c97zWl1XyA/vA9dag=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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