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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f2f5d8b44d23a372dcc7a86de47f92d5997f3bd9b48bc30df4a78eee2b228ad9' 
  AND token = 'gBxZWweLYvXrG0St6q9vyynldpKBbAvvs1g24v7hHl4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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