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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bc098307352b2589512e3b17ee7f23c1906f4192dad9ccaa49150cdbcc0aea05' 
  AND token = '8AaJOHyw7B1VhfkVG+qOKdahMR6n+WLm3y3iepSyYWc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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