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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f2243094c2e9c145dcca9b1a8e0fb4cbec9ea3301ae8fd13318c7788f2e375cb' 
  AND token = '59hp5UHeM5+XqcfSYK6cH+m7zXxNkaJvBvrgkclBy54=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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