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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e24f911abb288d399c381dfa1a7e0915694c2cb363d22c6c1d2017316f251177' 
  AND token = 'QgDtDGAK7Ptr44AknP9EZD6B1i7HhEZKIQAylXBfDv4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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